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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 27, Iss. 14 — Jul. 15, 2002
  • pp: 1256–1258

Low-power Lamb-dip spectroscopy of very weak CO2 transitions near 4.25 μm

Davide Mazzotti, Simone Borri, Pablo Cancio, Giovanni Giusfredi, and Paolo De Natale  »View Author Affiliations


Optics Letters, Vol. 27, Issue 14, pp. 1256-1258 (2002)
http://dx.doi.org/10.1364/OL.27.001256


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Abstract

We report saturated-absorption spectra recorded by use of 5 μW of infrared radiation coupled into a build-up cavity. Single-pass generation of difference-frequency radiation tunable near 4.25 μm in a periodically poled LiNbO3 crystal was used. Lamb dips of weak transitions of the fundamental rovibrational band of CO2 were observed, for what is believed to be the first time, up to the J=82 level. Application of these results to the extension of frequency-comb-based metrology in the infrared is discussed.

© 2002 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(230.5750) Optical devices : Resonators
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6390) Spectroscopy : Spectroscopy, molecular
(300.6460) Spectroscopy : Spectroscopy, saturation

Citation
Davide Mazzotti, Simone Borri, Pablo Cancio, Giovanni Giusfredi, and Paolo De Natale, "Low-power Lamb-dip spectroscopy of very weak CO2 transitions near 4.25 μm," Opt. Lett. 27, 1256-1258 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-14-1256

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